sched/rt: Update comment in pick_next_task_rt()

Commit:

  f4ebcbc0d7e0 ("sched/rt: Substract number of tasks of throttled queues from rq->nr_running")

added a new rt_rq->rt_queued field, which is used to indicate the status of
rq->rt enqueue or dequeue. So, the ->rt_nr_running check was removed and we
now check ->rt_queued instead.

Fix the comment in pick_next_task_rt() as well, which was still referencing
the old logic.

Signed-off-by: Muchun Song <smuchun@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20181027030517.23292-1-smuchun@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>

diff --git a/kernel/sched/rt.c b/kernel/sched/rt.c
index 2e2955a8cf8fe3648a007036dde85320f5834a45..a21ea60219293a0be6cc65ee63918f650b2606e1 100644 (file)
--- a/kernel/sched/rt.c
+++ b/kernel/sched/rt.c
@@ -1561,7 +1561,7 @@ pick_next_task_rt(struct rq *rq, struct task_struct *prev, struct rq_flags *rf)
 
        /*
         * We may dequeue prev's rt_rq in put_prev_task().
-        * So, we update time before rt_nr_running check.
+        * So, we update time before rt_queued check.
         */
        if (prev->sched_class == &rt_sched_class)
                update_curr_rt(rq);